J4 ›› 2011, Vol. 38 ›› Issue (2): 167-172.doi: 10.3969/j.issn.1001-2400.2011.02.030

• 研究论文 • 上一篇    下一篇

一种Turbo码编码参数的盲识别方法

张永光1,2   

  1. (1. 通信信息控制和安全技术重点实验室,浙江 嘉兴  314033;
    2. 中国电子科技集团公司第36研究所,浙江 嘉兴  314033)
  • 收稿日期:2010-04-15 出版日期:2011-04-20 发布日期:2011-05-26
  • 通讯作者: 张永光
  • 作者简介:张永光(1979-),男,工程师,E-mail: gfkd123@hotmail.com.

Blind recognition method for the Turbo coding parameter

ZHANG Yongguang1,2   

  1. (1. Science and Tech. on Communication Information Security Control Lab., Jiaxing  314033, China;
    2. The 36th Research Institute of CETC, Jiaxing  314033, China)
  • Received:2010-04-15 Online:2011-04-20 Published:2011-05-26
  • Contact: ZHANG Yongguang

摘要:

针对Turbo码的盲识别问题,提出了一种对非归零Turbo码编码参数进行盲识别的方法.该方法通过分析Turbo码中子编码器的编码组成结构,建立了1/2码率卷积码的分析模型,进而在恢复Turbo码中交织序列的基础上,利用穷举比对的方法来确定交织关系,实现了对非归零Turbo码的盲识别.实验仿真表明,在仅得到Turbo码编码数据序列的情况下,实际数据的编码参数识别分析结果和所设前提完全一致,表明了该识别方法的正确性.

关键词: 信道编码, Turbo码, 卷积码, 盲识别

Abstract:

In order to solve the problem of the blind recognition of Turbo codes,some methods for blind recognition of the Turbo coding parameter with trellis termination are proposed for the first time. Based on the analysis of the sub-encoder structure of Turbo codes,some analytical models of convolutional codes at a rate of 1/2 are proposed, and by recoverying the interleaver sequence of Turbo codes,interleaver mapping is decided by exhaust comparison, and blind recognition of Turbo codes with trellis termination is realized.Simulation results illustrate that given the unknown Turbo encoded data sequence, the recognized coding parameters are correct by comparing prior conditions which validates the accuracy of the proposed methods.

Key words: channel coding, Turbo codes, convolutional codes, blind recognition

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